body{background:#e8f5e9;color:var(--navy,#0a192f);overflow-x:hidden}.sim-header{padding:30px 24px 40px;text-align:center;position:relative;z-index:10;background:#1b5e20;color:white}.sim-header h1{font-family:'Poppins',sans-serif;font-size:2.5rem;font-weight:800;text-shadow:0 2px 10px rgba(0,0,0,0.5);margin-bottom:0.5rem}.sim-header p{color:rgba(255,255,255,0.9);max-width:600px;margin:10px auto;font-size:1.1rem}.back-btn{position:absolute;top:70px;left:24px;background:rgba(255,255,255,0.1);color:white;padding:8px 16px;border-radius:50px;text-decoration:none;font-size:0.9rem;transition:all 0.3s ease;backdrop-filter:blur(5px);border:1px solid rgba(255,255,255,0.3)}.back-btn:hover{background:white;color:#1b5e20}.sim-app-container{max-width:1200px;margin:40px auto;padding:0 24px;display:grid;grid-template-columns:1fr 350px;gap:30px;align-items:start}.sim-viewer{background:white;border-radius:var(--radius-lg,16px);box-shadow:var(--shadow-sm,0 4px 6px rgba(0,0,0,0.05));padding:20px;text-align:center}canvas{width:100%;max-width:800px;height:auto;background:#fafcff;border-radius:var(--radius-md,12px);cursor:crosshair}.sim-panel{background:white;border-radius:var(--radius-lg,16px);box-shadow:var(--shadow-sm,0 4px 6px rgba(0,0,0,0.05));padding:25px}.sim-panel h3{font-size:1.25rem;color:#1b5e20;margin-bottom:20px;display:flex;align-items:center;gap:10px;border-bottom:2px solid rgba(27,94,32,0.1);padding-bottom:10px;font-family:'Poppins',sans-serif}.info-box{background:#f1f8e9;border-radius:var(--radius-md,12px);padding:20px;border-left:4px solid #1b5e20;min-height:200px}.info-title{font-size:1.4rem;font-weight:700;color:#1b5e20;margin-bottom:10px;font-family:'Poppins',sans-serif}.info-desc{font-size:1rem;color:#333;line-height:1.6}@media (max-width:900px){.sim-app-container{grid-template-columns:1fr}}